Receiving device, receiving method, transmitting device, and transmitting method
View Patent ↗Disclosed herein is a receiving device including: a receiver that receives AV content; a trigger information acquirer that acquires trigger information adapted to identify control information to control operation of an application program run in conjunction with the AV content; a table acquirer that acquires a table in which the control information identified by the trigger information is stored in response to first version information that is included in the trigger information and indicates a version of the table; and a control section that controls the operation of the application program in response to the control information that is identified by the trigger information and is stored in the table.
1. A receiving device comprising:
a receiver; and
circuitry configured to
receive audio/video content;
acquire first control information adapted to identify application control information to control operation of an application run in conjunction with the audio/video content;
acquire a first table in which the application control information identified by the first control information is stored, the first table including an identifier associated with a specific segment of the audio/video content;
acquire a second table when first version information that is included second control information indicates a newer version of the first table, the first table being separate from the second table, the second table including the identifier associated with the specific segment of the audio/video content and included in the first table; and
control the operation of the application in response to the application control information that is identified by the first control information and is stored in the first table.
2. The receiving device according to claim 1 ,
wherein second version information indicating the version of the first table is stored in the first table, and
the circuitry acquires the second table when the first version information included in the second control information is different from the second version information stored in the first table.
3. The receiving device according to claim 2 ,
wherein the first and control information are transmitted by a broadcast together with the audio/video content,
the first and second tables are delivered via a network,
and the circuitry is configured to
extract the first and second control information from data of the audio/video content, and
acquire the first and second tables delivered via the network.
4. The receiving device according to claim 2 ,
wherein the audio/video content is transmitted by a broadcast,
the first and second tables are delivered via a network,
the circuitry is configured to
extract a feature from data of the audio/video content,
acquire the first and second control information corresponding to an identification result of the audio/video content identified by using the feature, and
acquire the first and second tables delivered via the network.
5. The receiving device according to claim 1 ,
wherein an action in the first table indicating the operation of the application is associated with a time at which the action should be executed, and
the circuitry is configured to control the operation of the application in response to the action identified from the first table based on time information included in the first control information.
6. The receiving device according to claim 1 ,
wherein the second control information includes an identifier of the first table.
7. The receiving device according to claim 1 , wherein the circuitry is configured to
acquire the first and the second control information from a digital television broadcast signal that includes the audio/video content, and
acquire the first and second tables from a computer network.
8. The receiving device according to claim 1 ,
wherein the second table includes timing information for at least one event included in the first table.
9. A receiving method of a receiving device, the method executed by the receiving device, comprising:
receiving audio/video content;
acquiring first control information adapted to identify application control information to control operation of an application run in conjunction with the audio/video content;
acquiring, by circuitry of a reception apparatus, a first table in which the application control information identified by the first control information is stored, the first table including an identifier associated with a specific segment of the audio/video content;
acquire a second table when first version information that is included in second control information indicates a newer version of the first table, the first table being separate from the second table, the second table including the identifier associated with the specific segment of the audio/video content and included in the first table; and
controlling, by the circuitry, the operation of the application in response to the application control information that is identified by the first control information and is stored in the first table.
10. A transmitting device comprising:
a transmitter; and
circuitry configured to
generate first control information that is adapted to identify application control information to control operation of an application run in conjunction with audio/video content and includes first version information indicating a version of a first table in which the application control information identified by the first control information is stored; and
transmit the first control information together with the audio/video content, wherein
the first control information causes a reception apparatus that receives the first control information to acquire a first table in which the application control information identified by the first control information is stored, the first table including an identifier associated with a specific segment of the audio/video content, and
second control information causes the reception apparatus to acquire a second table when second version information that is included in the second control information indicates a newer version of the first table, the first table being separate from the second table, the second table including the identifier associated with the specific segment of the audio/video content and included in the first table.
11. A transmitting method of a transmitting device, the method executed by the transmitting device, comprising:
generating, by processing circuitry of the transmitting device, first control information that is adapted to identify application control information to control operation of an application run in conjunction with audio/video content and includes first version information indicating a version of a first table in which the application control information identified by the first control information is stored; and
transmitting, by a transmitter of the transmitting device, the first control information together with the audio/video content, wherein
the first control information causes a reception apparatus that receives the first control information to acquire a first table in which the application control information identified by the first control information is stored, the first table including an identifier associated with a specific segment of the audio/video content, and
second control information causes the reception apparatus to acquire a second table when second version information that is included in the second control information indicates a newer version of the first table, the first table being separate from the second table, the second table including the identifier associated with the specific segment of the audio/video content and included in the first table.